How Crowded Is Fort Sumter and Fort Moultrie in May?
May is an average month at Fort Sumter and Fort Moultrie National Historical Park, running about 1.1× the park's average month — roughly 9% of the year's visitors come in May. That puts it between the July peak and the January low. Overall our best-time score rates May as "Good" for a visit. Typical May weather averages a high near 82°F and a low around 63°F, with about 3.3" of precipitation. You'll get about 13.7 hours of daylight to explore.
Frequently Asked Questions
May is average at Fort Sumter and Fort Moultrie National Historical Park (about 1.1× the average month). Our best-time score rates it "Good". The single best month overall is September.
The busiest month is July and the quietest is January. May sits at about 1.1× the park's average, or 9% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.